/*
 * Copyright 2002-2015 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.github.xiaolyuh.support;

import com.github.xiaolyuh.cache.AbstractValueAdaptingCache;

import java.io.Serializable;

/**
 * 空值标识
 *
 * @author olafwang
 * @see AbstractValueAdaptingCache
 */
public final class NullValue implements Serializable {

    public static final Object INSTANCE = new NullValue();

    private static final long serialVersionUID = 1L;

}
